I pretty much agree with the comments Mark has made and also with Boris that there may be too many photos.
I keep all of my photos in private galleries and only open some up for public viewing. This way viewers dont get fed up wading through thousands of pics and go elsewhere. Then you can always refresh by removing a few and adding a few new ones.
Just one other point - I think the navigation bar is not centered below the banner. This was the very first thing I noticed as soon as your home page loaded.
But a great site filled with some wonderful images. I like that theres not any waffle and is concentrated on the photos. (I'm gonna have to reduce the waffle on my home page)
It can get quite addictive customizing your smugmug site cant it. I've lost numerous hours tweaking and re-tweaking, then got so frustrated I got a friend to help me out.
You can check it out here..........
http://www.reflectionsby.smugmug.com/